Quick Fulfillment Quick Release Car Battery Connectors are designed for users who usually replace batteries. Please check picture 4. Red and blue battery quick release connectors allow quick disassembly for recharging and storage of your marine or vehicle batteries. Professional Designterminal connectors are designed for batteries top post and side post batteries with standard post adapters. Specially installed in tight spaces, the connectors are ideal for battery. Quality MaterialThe battery connectors are made of high quality copper, with corrosion resistance, good electrical conductivity, easy wiring and a strong connection. The plastic cover is an insulating cover, which is dust-proof and moisture-proof, and long-lasting. Widely Used for VehiclesThe wire on the terminal makes it faster and easier to install. It is not only 12v battery terminals, but also for 24v and 48v, used for battery extension, parallel connection, and ground connection for car, vehicle, RV and boat, maritime, etc. Easy to UseYou will get positive battery terminal connectors, as well as negative battery terminal connectors. Please check photos 4 and 5.When you want to replace the battery, by wrench, just lift the battery terminal covers (insulation wrap) which can remove the battery, then attach a new battery to the battery terminals. car battery by hanging on the cap.